Drill-sharpener.



W. A. SMITH.

DRILL SHARPENER.

APPLICATION FILED FEB. 27, 1917.

Patented Jan. 1551918.

4 SHEETS-SHEET! irl A M I W. A. SMITH.

DRILL SHARPENER.

APPLlCATION FILED FEB.27, 19n- 1925mm, Patented Jan.15,1918.

4 SHEETSSHEET 2- mill-m l v I W mun amw toz W. A. SMITH.

DRILL SHARPENER. APPLICATION FILED FEB. 27. 1917.

Lfififi wl, Patented. Jan.15,1918.

4 SHEETSSHEET 3.

W. A. SMITH.

DRILL SHARPENER.

APPLICATION FILED FEB. 2?, L917 4 SHEETSSHEET 4.

YT Him ILLI-r aw Mg Patented Jan. 15, 1918.

WILLIAM A. SMITH, OF DENVER, COLORADO, ASSIGNOR TO THE DENVER ROCK DRILL MANUFACTURING COMPANY, OF DENVER, COLORADO, A CORPORATION OF DELA- WARE.

Application filed February 27, 1917.

To all whom it may concern Be it known that I, IVILLIAM A. SMITH, a citizen of the United States, residing at Denver, in the county of Denver and State of Colorado, have invented certain new and useful Improvements in Drill-Sharpeners, ofwhich the following is a specification.

The present invention relates more particularly to drill sharpening means of the type disclosed in Patent No. 1,214,604, dated February 6, 1917, and'the primary object is t'o'provide mechanism that is more compact in its character, the controlling valve means being housed, and not only out of the way, but more completely protected, while much exposed piping is eliminated.

The preferred embodiment of the invention is illustrated in the accompanying drawings, wherein Figure 1 is a side elevation of the apparatus, with portions shown in section,

Fig. 2 is a view of the opposite side to that shown in Fig. 1, and illustrating other portions in section,

Fig. 3 is a front elevation with portions broken away,

Fig. 4 is a horizontal sectional view,

Fig. 5 is a detail sectional view through the valve and easing controlling the supply of fiuid to the dolly hammer,

Fig. 6 is a similar view of the valvemechanism controlling the supply of motive fluid to the vise operating motor,- and r Fig. 7 is a'detail sectional view illustrating the preferred pipe connection with the vise operating motor.

Similar reference numerals designate corresponding parts in all the figures of the drawings.

In the embodiment disclosed, a support is employed, comprising a hollow standard or base 8 having a platform 9 thereon, which platform supports a suitable v-ise. As this vise corresponds substantially to that disclosed in the aforesaid Patent No. 1,214,604, it is believed to be unnecessary to describe the same in detail, and that it is sufficient to state that it consists of a lower fixed die 10and an upper movable die 11, the latter being carried by a piston rod 12 having a piston 13 that operates in a suitable cylinder member 14, the said cylinder member being supported above the vise on spaced guide bolts 15. i I

Specification of Letters Patent.

DRILL-SHARPENER.

Patented Jan. 15, 1913..

Serial No. 151,308.

The platform is provided with a rear eX- tension 16 on which is mounted a fluid actuated hammer 17 of suitable construction, said hammer operating on a dolly 18 that to operates with the dies in a manner well understood and set forth in the aforesaid patent.

A fluid supply pipe 19 enters the rear side of the hollow standard 8, and is coupled to a horizontal valve casing 20 located within said. standard and attached to one side of the same by a lag screw 21. This valve casing 20 is provided with a horizontal bore 22 provided with internal annular grooves 23 and 24. A passageway or conduit 25, leading from the supply pipe 19. is in communication with the groove 23, and extending from the groove 24 is a vertical pipe 26 that projects through the platform 9 and is in communication with a passageway 27 in one side of the cylinder member 14 and leading to the chamber of the piston 13. Preferably this pipe enters a suitable packing gland 28 formed on the cylinder member 14. In the chamber 22 of the valve casing 20 is a reciprocatory valve, consisting of spaced heads 29 connected by a reduced neck portion 30, one of the heads being movable across the groove 24, and the chamber 22 in rear of said groove being open to the at mosphere, as indicated at 31. This valve 18 furthermore provided with a stem 32 connected to an arm 33 that is fixed to a rock shaft 34. The rock shaft extends across the internal chamber of the standard 3, being journaled in the opposite side walls thereof and projects from one side of said standard, the projecting end being provided with a handle crank 35. The movement of the rock shaft-is limited by a lug 36 thereon, which lug is arranged to abut against a stop 37 disposed in the path of the lug.

Mounted within the standard on the opposite wall to that carrying the valve casing 20 is another valve casing 38, the same having a valve chamber 39 terminating in a valve seat 40 with a passage 41 disposed on'the opposite side of the seat 40 to the chamber 39. Connecting the valve casings 20 and 38 is a transversely disposed branch pipe 42 that is in communication with the supply pipe 19 through the conduit 25, and is also in communication with the valve chamber 39, as shown at 43, A horizontally disposed supply pipe 44: is in communication with the passageway 4L1, as shown in Fig. 5, and said pipe 44 projects through the 'rear side of the standard 8, theproiectingend having coupled thereto a'hose that is in communication. with the dolly hammer 17 to supply actuating fluidtlier'eto. Operating in the valve casing 38, isa valve 46 that cooperates with the seataO, being normally urged into seated position by a spring 4-7 arranged behind the same, this valve being providedwith a forwardlyprojecting stem 48 disposed in the path of an arm 4-9 fixed to the rock shaft 34, so that when said shaft is moved sufficiently the arm 4-9 will strike the stem 48, and thus move the valve to open position. The arrangement is preferably such that when the rock shaft is turned by the handle 35, the valve 29-3O will 'be first shifted and afterward the valve l6 will be actuated.

Briefly described, the operation ofythe structure is as follows: Assuming the vise in open position, the tool to be sharpened is placed therein and the operator then turns the handle crank35. lVith the parts as shownin Figs. 4, and 6, the first movement will carry the rear head 29 of the valve 30 across the channel 2%, thereby closing the open end 31, and at the same time bringing the channels or grooves 23 and 2st into comnumication. Motive fluid supplied through the pipe 19 will therefore flow into the pipe 26 and pass to the vise operating motor l3l4l-, causing the vise to be closed upon the tool. A further movement of said rock shaft will. cause the arm 49 to strike the stem l8 and thereby open the valve 46. As a consequence motive fluid from the supply pipe 19 will pass through the branch 42, the valve casing 38, and the pipe or conduit,44f-l5 to the dollying hammer, so that the latter will be actuated. Upon the reverse movement, the valve t6 will first be closed, cutting off the supply of motive fluid to the dollying hammer, and afterward the motive fluid will be cut off from the vise actuating motor by the rear. head 29 of the valve 30 again assuming the position shown in Figs. 4: and 6. This movement, it will be noted, opens. the pipe26 to the atmosphere through the open end 31 of the valve chamber22, so that the motive fluid above the piston 13 can exhaust, and the vise will be released.

From the foregoing, it is thought that the construction, operation and many advantages of the herein described invention will be apparent to those skilled in the art, without further description, and it will be understood that various changes in the size, shape, proportion, and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention as defined in the claims.

Having thus fully described my invention, whatI claim as new, and desire to secure by Letters Patent, is p v 1. Inapparatus of the character set forth, the combination witlra'hollow supportfof a vise mounted thereon, fluid actuated "means for operating the vise, a fluid actuated ham mer, means for supplying fluid to the vise 'actuatingmeans and the hammer, and valve mechanism for controlling the supply means located in and housed by the hollow support.

2. In apparatus of the character set forth, the. combination with a hollow support, of a vise mounted thereon, tfluid actuatedmeans for operating the vise, a fluid actuated hammer, a controlling valve forthe vise linounted within and housed by the support, a controllingvalve forthe hammerlocated Within and housed by the support, and operating means for the valves mounted on thesupport and including an actuating device disposed externally thereof. V 3. Inapparatus of the character set forth, the combination with a base having a-hollow standard, of avise mounted on the standard and including a movable member, a motor for operating the movable member, a fluid actuated hammer coacting with the. vise, means for supplying fluid to the motor and to the hammer, a controlling valve for the motor, a controlling valve for the hammer, said valves being located within and housed by the standard, and a rock shaft journaled, injthestandardand havin means for actuating the valves, said shaft having an exposed operating device.

a. In apparatus of the character set forth, the combination with a hollow support, of a vise mounted thereon, fluid actuated means for operating the vise, a fluid actuatedhammer cooperating with the vise, valve casings located in the hollow support, a fluid supply conduit having branches communicating with the casings, conduits leading from'the casings to the vise operating means and hammer respectively, valves in the casings controlling the fluid supply to the latter conduits,- and means for actuating the valves. '5. In apparatus of the character set forth, the combination with a hollow support, of 'a vise mounted thereon, fluid actuated means for operating the vise, a fluid actuated hammer cooperating with thevise, valve casings located in the support, means for mounting the valve casings on said support, a fluid supply pipeconnected to one valve casing, a

branch pipe connecting the casings within the support and communicating with the supply pipe, conduits leading from the easings to the vise operatingmeans and hammer respectively, valves in-the casings controlling the fluid supply to thelatter conduits, and means mounted 011 the support for actuating the valves.

6. In apparatus of the character set forth,

1,253,291 are the combination with a hollon standard, of a vise mounted thereupon, a motor for operating the vise, a hammer mounted on the standard and cooperating with the vise, horizontally disposed valve casings arranged Within the standard, a supply pipe connected to one of the valve casings, a branch pipe connecting the valve casings and in comn1unication with the supply pipe, COIlClUltSEX- tending from the casings to the vise operating means and hammer respectively, reciprocatory valves in the valve casing controlling the How of fluid to the latter conduits, a rock shaft journaled in the standard and having an exposed actuating device, and means carried by the rock shaft for successively operating the Valves.

In testimony whereof, I affix my signature in the presence of tWo Witnesses.

WILLIAM A. SMITH. Witnesses D. E. STROUT, L. N. RODOLF.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Fatents,

Washington, D. C. 

